@nativescript-community/preferences/index.common.d.ts

Common API to allow users to use native (familiar) app settings screens instead of having to craft custom UIs

import Observable from '@nativescript-community/observable';
export declare abstract class Common extends Observable {
    abstract setValue(key: string, value: any): any;
    abstract getValue(key: string, defaultValue?: any): any;
    abstract openSettings(): any;
    abstract clear(): any;
    destroy(): void;
}